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Tytuł:
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Clinical Significance of Renal Allograft Protocol Biopsies: A Single Tertiary Center Experience in Malaysia.
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Autorzy:
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Fu MS; Department of Medicine, Hospital Segamat, 85000 Segamat, Johor, Malaysia.
Lim SJ; Division of Nephrology, Department of Medicine, University Malaya Medical Centre, 59100 Kuala Lumpur, Malaysia.
Jalalonmuhali M; Division of Nephrology, Department of Medicine, University Malaya Medical Centre, 59100 Kuala Lumpur, Malaysia.
Ng KS; Department of Medicine, University Malaya Medical Centre, 59100 Kuala Lumpur, Malaysia.
Lim SK; Division of Nephrology, Department of Medicine, University Malaya Medical Centre, 59100 Kuala Lumpur, Malaysia.
Ng KP; Division of Nephrology, Department of Medicine, University Malaya Medical Centre, 59100 Kuala Lumpur, Malaysia.
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Źródło:
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Journal of transplantation [J Transplant] 2019 May 02; Vol. 2019, pp. 9153875. Date of Electronic Publication: 2019 May 02 (Print Publication: 2019).
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Typ publikacji:
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Journal Article
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Język:
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English
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Imprint Name(s):
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Original Publication: [New York, NY] : Hindawi Pub. Corp.
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References:
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Entry Date(s):
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Date Created: 20190613 Latest Revision: 20220408
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Update Code:
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20240104
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PubMed Central ID:
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PMC6521333
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DOI:
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10.1155/2019/9153875
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PMID:
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31186948
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Background: The role of protocol renal allograft biopsy in kidney transplantation is controversial due to the concern with procedural-related complications; however, its role is slowly evolving. Recent evidence suggests that protocol biopsy is useful in detecting subclinical renal pathology. Early recognition and treatment of renal pathologies can improve long-term outcomes of renal allografts.
Methodology: A total of 362 renal allograft protocol biopsies were performed in adult recipients of kidney transplantation between 2012 and 2017. After excluding those with poor quality or those performed with a baseline serum creatinine level >200 umol/L, we analyzed 334 (92.3%) biopsies. Histology reports were reviewed and categorized into histoimmunological and nonimmunological changes. The immunological changes were subcategorized into the following: (1) no acute rejection (NR), (2) borderline changes (BC), and (3) subclinical rejection (SCR). Nonimmunological changes were subcategorized into the following: (1) chronicity including interstitial fibrosis/tubular atrophy (IFTA), chronic T-cell-mediated rejection (TCMR), unspecified chronic lesions, and arterionephrosclerosis, (2) de novo glomerulopathy/recurrence of primary disease (RP), and (3) other clinically unsuspected lesions (acute pyelonephritis, calcineurin inhibitors toxicity, postinfective glomerulonephritis, and BK virus nephropathy). Risk factors associated with SCR were assessed.
Results: For the histoimmunological changes, 161 (48.2%) showed NR, 145 (43.4%) were BC, and 28 (8.4%) were SCR. These clinical events were more pronounced for the first 5 years; our data showed BC accounted for 59 (36.4%), 64 (54.2%), and 22 (40.7%) biopsies within <1 year, 1-5 years, and > 5 years, respectively (p = 0.011). Meanwhile, the incidence for SCR was 6 (3.7%) biopsies in <1 year, 18 (15.3%) in 1-5 years, and 4 (7.4%) in >5 years after transplantation (p=0.003). For the nonimmunological changes, chronicity, de novo glomerulopathy/RP, and other clinically unsuspected lesions were seen in 40 (12%), 10 (3%), and 12 (3.6%) biopsies, respectively. Living-related donor recipients were associated with decreased SCR (p=0.007).
Conclusions: Despite having a stable renal function, our transplant recipients had a significant number of subclinical rejection on renal allograft biopsies.
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